I'm not sure how you are ending up with the string " (0) " as your results (although. . . maybe a cgi directive on die), but I do see how you are not processing anything:

if(isset($_POST['email'])) {

There is no input type named email, so therefore 'email' is not a valid associative index in the $_POST superglobal.

You can actually do a lot to simply this and clean up. The first is the issets. There is no reason to use multiple; the isset() function accepts a variable number of parameters: if (!isset($var1, $var2, $var3, ...)). Every one has to be valid in order for the isset() to pass.

You can also use arrays to group things if it makes sense to do so. In HTML you can use the syntax with the names as an array and retrieve them as such: